| 摘要 |
<p>PURPOSE:To adjust the temperature of air by changing the introducing port of air for effecting heat exchange. CONSTITUTION:The casing 13 of an incinerating furnace 1 is provided with a plurality of air introducing ports 20a-20f on the outer peripheral wall thereof. The air introducing ports 20a-20f are connected to an air supplying device or a ventilating fan 23 through on/off valves 22a-22f. Air is sent into the casing 13 of a heat exchanger 10 through the air introducing ports 20a-20f, corresponding to the opened valves among the plurality of on/off valves 22a-22f. The air, introduced into the casing 13, recovers heat dissipated from the peripheral wall of an exhaust gas passing tube.</p> |
